“Masters of the Universe” might not know who its audience is. Sure, yes, perhaps “everyone” is the goal. Modern blockbusters are usually aiming for those golden four quadrants that might justify spending hundreds of millions of dollars to make a movie about an old toy. But as far as beautiful, blond Mattel products go, He-Man is not and was never going to be Barbie. It’s a character and aesthetic — bodybuilder muscles, pageboy haircuts and all — that is about as rooted in the 1980s as you can be. The toy launched in 1982, apparently an attempt to compete with Star Wars products. The animated series came the next year, and in 1987, a movie was released with Dolph Lundgren. It was a critical and box office flop, and that was around the height of its popularity.Yes, some have reclaimed that “Masters of the Universe” as a campy cult classic, and there have been some animated series in the last few decades, but culturally speaking, He-Man seems to have stayed in that decade. It’s a relic that went the way of Saturday morning cartoons — aside from that meme set to “What’s Up?” by 4 Non Blondes, which is referenced in the new movie. But even that’s a little long in the tooth: It was made in 2005.